std_msgs/Header             header
Oem7Header                  nov_header
SolutionStatus              sol_status
PositionOrVelocityType      pos_type
uint32                      lon_zone_number
uint32                      lat_zone_letter
float64                     northing
float64                     easting
float64                     height
float32                     undulation
uint32                      datum_id
float32                     northing_stddev
float32                     easting_stddev
float32                     height_stddev
int8[4]                     stn_id
float32                     diff_age
float32                     sol_age
uint8                       num_svs
uint8                       num_sol_svs
uint8                       num_sol_ggl1_svs
uint8                       num_sol_multi_svs
uint8                       reserved
BestExtendedSolutionStatus  ext_sol_stat
uint8                       galileo_beidou_sig_mask
uint8                       gps_glonass_sig_mask

